Electric regulator



(No Model.) 2 Sheets-Sheet 1 J. WLANGLEY.

ELECTRIC REGULATOR.. No. 247,664. Patented Sept. 27, v1881.

Wifi/1.66866.' /zzfeniorr:

N. PETERS Pnumunmgnpher. wh nnnnnnnn C.

(No Model.) 2 sheets-sheet 2,

' J. W. LANGLBY.-

' ELECTRIC REGULATOR. No. 247,664. Patented Sept. 27,1881.

LZ1/1 In venir/fr.'

- @www wuw. lyfmmaw muy N. Pagans. Phcwunwmpm. wmingm n, c.

UNITED STATES PATENT OFFICE.

JOHN IV. LANGLEY, OF ANN ARBOR, MICHIGAN.

ELEGTRIC REGULATOR.

SPECIFICATION forming part of Letters Patent No. 247,664, dated September 2'?, 1881.

Application tiled May 2, 1881. (No model.)

To all lwhom tt may concern:

Be it known that I, JOHN W. LANGLEY, of Ann Arbor, in the county ot' Washtenaw and State'ot1 Michigan, have invented a new and useful Improvementin Electric Regulators, of which the following is a specification.

In the accompanyingdrawiugs, Figurel represents a sectional View through the electromagnet and armature ot' adynamo-electric machine. Fig.2 is an end view,sho\ving a modification.

A B are the poles of an electro-magnet in a dynamo-electric generator.

O is an armature revolving between poles A B.

D D are pieces of magnetic metal, one of which is hinged at one end to the top of pole B and the other to the bottom ot' pole A; or they may be both hinged to the top and bottom, respectively, ot' either of said poles.

E E are springs, ot' any diamagnetic substance, which are fastened to the poles A B, and are so placed that they will resist any motion ot' the tree ends ot' piecesD D toward the polesA B. 'lhese springs may be seton guiderods ot' some diamagnetic substance, as shown in the drawings, or be attached to the poles and free ends of pieces D I) in any suitable manner.

As the attraction of theiree ends of pieces D D toward poles A B increases in power as said free ends approach said poles faster than the resistance ot' springs E E increases, shorter supplemental springs may be used, as shown at F and G, Fg.2, which will increase the rcsistance of the springs in the same ratio as the magnetic attraction increases; or a system of weights and levers oft'erin g variable resistances may be substituted for the springs.

1t is well known that the eficiencyof a dynamo-electric machine depends upon the amount of free magnetism in the electro-magnet.

If the poles of an electromagnet be connected by any magnetic substance, the free magnetism in such electro-magnet becomes greatly diminished, the magnetism therein becomes bound, and, in proportion as a magnetic connection is more nearly established between the poles of an electro-magnet in a dynamoelectric machine, the amount of free magnetism in such electro-magnet will be diminished and the current produced by such machine weakcned. It follows that if, in an electricflightin g system, an excess of current be made to bring a magnetic connection between the poles of the electro-magnet of the generator closer to said poles, the current produced bythe generator will be diminished substantiallyin proportion as such connection approaches said poles, and the electric lamps will be kept steady.

The operation of my invention is as follows: The springs E E are adjusted in any suitable manner (the manner shown in the drawings is by screw-nuts) to such tension that when the generatorisproducin g a currentof the strength necessary to operate the system of lights to which the generator is attached the resistance of the springs will equal the attraction of the poles A B upon the pieces D D, and the sprin gs E E will hold the free ends ot pieces D D at a lixed distance from poles A B. lf the current becomes too strong-as, for instance, by a lamp being extinguished-the magnetic attraction ofthe poles A B onv the free ends of pieces D D is increased, and overcomes the resistance of the springs E E, and the free ends of the pieces D D will be drawn toward the poles A B, thus diminishing the amount ot' free magnetism in the electro magnet and weakening the current produced by the generator. When the current is reduced to the point necessary for operating the lamps still lighted the resistance of the springs will equal the magnetic attraction of the poles and hold the free ends of pieces D D at proper distances from the poles A B. It' rthe current becomes too weak, the springs E E will overcome the magnetic attraction ofthe poles AB upon the free ends ot' pieces D D, and force said free ends ot' said pieces D D farther from said poles, thus increasing the amount of free magnetism in said electro-magnet and producing an increase of current.

I do not contine myself to the use of two magnetic pieces, D D, as one only may be used 5 but I prefer to use two.

Myinvention may also be applied to the exciting-machine of a maguetoelectric lighting system.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination, with the poles ot' the electro-magnet of a dynamo or magneto electric machine, of a magnetic metal piece and IOC mechanism sustaining the same in such relation to the poles of the electro-magnet that an excess of current will cause the poles to attract the magnetic metal piece and tend to establish magnetic communication between the poles through said magnetic metal piece, substantially as and for the purpose described.

2. The combination, with the poles of the electro-magnet ot' a dynamo or magneto electric machine, of a magnetic metal piece connected at one end with one of the poles, and mechanism for sustaining the other end ofthe magnetic metal piece at a distance from the other pole in such relation thereto that an excess ot' current will cause the pole to attract and swing the magnetic metal piece and tend to establish magnetic communication between the poles, substantially as described.

3. The combination ofthe poles A B ot' the electro-magnetofa dynamo or magneto electric machine with the movable magnetic piece or pieces D, and diamagnetic springs E or their equivalent, all constructed, arranged, and operating substantially as herein described.

4. The combination, with the poles of the electro-magnet ot' a dynamo or magneto electric machine, of a magnetic metal piece connected at one end with one of the poles, and a spring sustaining said magnetic metal piece in such relation to the other pole that an excess of current will cause the pole to attract the same and tend to establish magnetic communication between the poles through the magnetic metal piece, substantially as described.

JOHN W. LANGLEY.

Witnesses:

WM. H. PETTEE, H. D. BENNETT. 

